Reference : Development of a statistical reduction method for the Palomar Fiber Nuller
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/81495
Development of a statistical reduction method for the Palomar Fiber Nuller
English
Hanot, Charles [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Mennesson, Bertrand [Jet Propulsion Lab. (USA)]
Serabyn, Eugene [Jet Propulsion Lab. (USA)]
Martin, Stefan [Jet Propulsion Lab. (USA)]
Liewer, Kurt [Jet Propulsion Lab. (USA)]
Loya, Frank [Jet Propulsion Lab. (USA)]
Mawet, Dimitri [Jet Propulsion Lab. (USA)]
Riaud, Pierre [Univ. de Liège (Belgium)]
Absil, Olivier mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Jul-2010
Optical and Infrared Interferometry II
Danchi, W. C.
Delplancke, F.
Rajagopal, J. K.
SPIE
Proceedings of the SPIE, volume 7734
2S.1-2S.12
No
No
International
Bellingham
WA, USA
Astronomical Telescopes and Instrumentation 2010: Optical and Infrared Interferometry II
27/06/2010 - 2/07/2010
SPIE
San Diego
CA, USA
[en] A unique statistical data analysis method has been developed for reducing nulling interferometry data. The idea is to make use of the statistical distributions of the fluctuating null depths and beam intensities to retrieve the astrophysical null depth in the presence of fluctuations. The approach yields an accuracy much better than is possible with standard data reduction methods, because the accuracy of the null depth is not limited by the sizes of the phase and intensity errors but by the uncertainties on their statistical distributions. The result is an improvement in the instrumental null depth measurement limit of roughly an order of magnitude. We show in this paper that broadband null depths of 10[SUP]-4[/SUP] can be measured in the lab with our infrared Fiber Nuller without achromatic phase shifters. On sky results are also dramatically improved, with measured contrasts up to a couple of 10[SUP]-4[/SUP] with our instrument mounted on the Hale telescope at the Palomar Observatory. This statistical analysis is not specific to our instrument and may be applicable to other interferometers.
Researchers
http://hdl.handle.net/2268/81495
10.1117/12.857014
http://adsabs.harvard.edu/abs/2010SPIE.7734E..88H

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